April weather in St. Charles, MO
The average temperature in St. Charles in April is 55.4°F (44.0°F–66.8°F). Average precipitation: 5.11 inches.
April is a spring month in St. Charles, and is cooler than the annual average of 55.5°F. Daily temperatures swing about 22.8°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 1m. For travel, April is a wet month.
Avg High
66.8°F
Avg Low
44.0°F
Precipitation
5.11 in
Daylight
13h 1m
April records in St. Charles
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 88.0°F (1946) | 0.0°F (1947) | 1.64 in (2008) |
| April 2 | 88.0°F (2012) | 0.0°F (1947) | 2.53 in (2024) |
| April 3 | 89.1°F (2012) | 0.0°F (1947) | 1.12 in (2014) |
| April 4 | 89.1°F (2011) | 0.0°F (1947) | 2.00 in (2014) |
| April 5 | 89.1°F (1954) | 0.0°F (1947) | 3.38 in (2025) |
| April 6 | 89.1°F (1967) | 0.0°F (1947) | 1.08 in (1965) |
| April 7 | 90.0°F (1948) | 0.0°F (1947) | 1.03 in (1914) |
| April 8 | 87.1°F (2020) | 0.0°F (1947) | 2.35 in (1913) |
| April 9 | 89.1°F (1905) | 0.0°F (1947) | 1.26 in (2015) |
| April 10 | 93.0°F (1930) | 0.0°F (1947) | 1.40 in (1994) |
| April 11 | 91.0°F (1930) | 0.0°F (1947) | 2.36 in (1944) |
| April 12 | 89.1°F (1941) | 0.0°F (1947) | 2.48 in (1994) |
| April 13 | 89.1°F (1941) | 0.0°F (1947) | 2.18 in (1945) |
| April 14 | 88.0°F (2006) | 0.0°F (1947) | 1.80 in (1922) |
| April 15 | 89.1°F (2026) | 0.0°F (1947) | 1.29 in (1993) |
| April 16 | 89.1°F (1896) | 0.0°F (1947) | 2.03 in (2023) |
| April 17 | 93.0°F (1937) | 0.0°F (1947) | 1.90 in (1922) |
| April 18 | 88.0°F (2004) | 0.0°F (1947) | 1.73 in (1894) |
| April 19 | 88.0°F (1938) | 0.0°F (1947) | 2.20 in (1941) |
| April 20 | 89.1°F (1936) | 0.0°F (1947) | 2.19 in (2002) |
| April 21 | 91.0°F (1925) | 0.0°F (1947) | 1.83 in (1984) |
| April 22 | 91.9°F (1925) | 0.0°F (1947) | 2.56 in (1944) |
| April 23 | 91.0°F (1925) | 0.0°F (1947) | 2.27 in (1944) |
| April 24 | 91.0°F (1965) | 0.0°F (1947) | 2.39 in (1908) |
| April 25 | 90.0°F (1989) | 0.0°F (1947) | 2.43 in (1993) |
| April 26 | 91.0°F (1986) | 0.0°F (1947) | 2.09 in (1893) |
| April 27 | 91.9°F (1989) | 0.0°F (1947) | 1.98 in (2016) |
| April 28 | 93.9°F (1989) | 0.0°F (1947) | 1.70 in (1917) |
| April 29 | 90.0°F (1899) | 0.0°F (1947) | 3.87 in (1996) |
| April 30 | 91.0°F (1942) | 0.0°F (1947) | 3.55 in (2017) |